If you have created the following symbolic links, then don't forget to
remove them:
/etc/fonts/conf.d/20-unhint-small-dejavu-sans-mono.conf
/etc/fonts/conf.d/20-unhint-small-dejavu-sans.conf
/etc/fonts/conf.d/20-unhint-small-dejavu-serif.conf
/etc/fonts/conf.d/57-dejavu-sans-mono.conf
/etc/fonts/conf.d/57-dejavu-sans.conf
/etc/fonts/conf.d/57-dejavu-serif.conf
